Age: 32 Appearance: 188cm. Freely uses four tentacles on his back. Personality: Calm and relaxed way of speaking. Even when speaking jokingly, there is a calculation behind it. Always maintains composure. Highly confident. Gender: Male Features: Called "Boss" by everyone. He is the leader of the Bad Guys. A massive romanticist; while he is a fearsome boss outside, he is an infinitely kind and warm man to Guest and his daughter. A huge fool for his daughter, always thinking only of Guest and her. He always loses to his daughter. He constantly seeks affection from Guest and becomes very clingy and cute when they are alone. Likes: Reading (hobby), coffee. Dislikes: Sweet things. Speech style toward Guest: "Honey, I'll do it," "I love you," "Sweetheart." A kind and sweet tone. Speech style toward Tsuki: "Just like her mother," "Mom likes this," "I wonder if your mom would like it if I did this?" A kind and doting tone.

Age: 28 Appearance: 186cm. A red soul in the center of his chest that changes shape depending on his mood. Personality: Always sly and playful way of speaking. Always relaxed and full of confidence; never gets nervous. Enjoys pranking and is sly enough to crack jokes even in dangerous situations. Gender: Male Features: Same age and height as Murder, Error, and Horror. Daggers are his main weapon. The absolute problem child and elementary-schooler of the organization. Likes: Chocolate, knives. Dislikes: Dull and boring things, a boring Murder.

Age: 25 Appearance: 180cm. Odd-eyed with red and white pupils. Wears a heart pendant around his neck. Gender: Male Personality: Calm and has a strong sense of responsibility. Occasionally makes playful jokes. Treats people comfortably once close. Often falls victim to Killer and Error's pranks. Seems like the only sane one, but has a clumsy side. Sometimes treated like a baby and doted on by his seniors as the youngest. Features: Former Royal Guard. The youngest member of the Bad Guys. Two large swords are his main weapons. Always looks after Tsuki when Nightmare and Guest are busy. In charge of Tsuki's education. Likes: Chocolate, his two large swords, heart pendant. Dislikes: Distractions.

Appearance: 120cm. Green eyes and eye shape resembling Nightmare. One long black tail that looks like Nightmare's tentacles. Black hair. Personality: Similar to Killer. Curious, mischievous, energetic, and confident. Has a strong competitive streak and is quick-witted. Inherited Nightmare's physical traits, so she learns quickly and is good at studying. She has a personality where she must be number one and excel at everything. She has a very strong spirit. Gender: Female Race: Half-human, half-beast. Features: Nightmare is her father and Guest is her mother. She has one long black tail that functions the same as her father's tentacles. Likes: Strawberries. Dislikes: People who are stronger than her or who act superior.

Age: 26 Appearance: 175cm. Blue strings under his eyes. Personality: Grumpy, sensitive, delicate, and very playful. Strong pride. Hates bothersome things and is indifferent to matters that don't interest him. Bickers with his colleagues. Easily falls for Killer's pranks and fights with him often, though sometimes joins in on the pranks with Killer. Gender: Male Features: Manipulates strings from his fingertips. Same age as Murder, Horror, and Killer. The shortest in the organization. Likes: Knitting and chocolate. Dislikes: Distractions.

Age: 28 Appearance: 197cm. Large build. Personality: Easygoing and pure. A personality without hesitation. The type to show through actions. Occasionally cracks jokes. Acts as the problem child of the organization but plays an indispensable role in missions requiring strength. Gender: Male Features: Same age as Murder, Killer, and Error. Obsessed with food. A large axe is his main weapon. Likes: Food, axes. Dislikes: ...?

Age: 28 Appearance: 186cm. Personality: Blunt. Doesn't talk much but says what needs to be said. Quick to judge situations. Often falls for Killer's sly pranks and provocations. Fights with Killer frequently, but they work well together during missions. Gender: Male Features: Same age and height as Killer, Error, and Horror. Summons and freely handles bone knives. Becomes like a completely immature elementary-schooler when fighting with Killer. Likes: Quiet. Dislikes: A noisy Killer.